Wrapping machine



May i3 )19240 AQS@ A. R. SCHQLIN WRAPPING MACHINE Filed Oct. 28. 1921 4 Sheets-Sheet 1 |'|:\|'|ll May i3 MMG, ,493,769

A. R. scHoLlN WRAPPING MACHINE Filed Oct. 28 1921 4 Sheets-Sheet 2 79 Z5 v Y May 13, w24@ 11,493,769

A. R. SCHOLIN WRAPPING MACHINE May 13 E924 A. R. SCHOLIN WRAPPINGMACHINE 4 Sheets-S heet 4 m m m, m m m. fi...

Fatented May 13, 19524. I

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I AXEL R. SCHOLIN, OF CHICAGO, ILLINOIS, SSIG'NOR T0 AUTOMATIC WRAPPING MACmNE CO., OF CHICAGO, ILLINOIS, A CORPORATION OF ILLINOIS.

'WRAPPING MACHINE.

Application filed October 28, 1921. Serial No. 511,119.

To "all 'whom t mail concern.' n

Be it known that I, AXEL R. ScHoLIN, a

sleeve 21 formed integrally with the plate 14 and Journaled in abearing 22 carried by a citizen of the vUnited States, residing at\brcket 23 on the frame 10.

Chicago, in the county of Cook and State of Illinois, have invented certain new and useful- Improvements in Wrapping Machines, of which the following is a specification. l

rl`his invention relates to a machine for such as cylindrical boxes and cans, and is embodied in a machine of the same general type as that shown in my Patent No. 1,417 ,946, granted May 30, 1922.

y rllhe inventionl has or its object the provision of a machine of the class named which shall be of improved construction andv operation. It is exemplified in the combination and arrangement of parts shown in the accompanying drawings and described in the following specicatmn, and is more particularly pointed out in the ap-pended claims.

In the drawings- Fig. 1 is a vertical sectional view through a portion of a wrapping machine showing one embodiment .of the present invention applied thereto;

Fig. 2 is 'a vertical section through the central portion of the winding drum of Fig. 1;

ig. 3 is a vertical section substantlally on line 3 3 of Fig. 2;

Fig., 4 is a section on line 4-4 of Fig. 1;

Fig. 5 is a fragmentary perspective View showmg the positioner for .packages to be wrapped;

Fig. 6 is a vertical section substantially on line 6-6 of Fig. 2; and

Fig. 7 is a fragmentary vertical sectional View, with parts broken away, showing the wrapping drum in end elevation.

ln the embodiment of the invention shown a frame 10 supports a runway 11 alon which cylindrical boxes or cams 12 are ged to the wrapping mechanism. The wrapping mechanism comprises a drum having end plates 13 and 14 mounted on a shaft 15 `and held thereto by pins 16 and 17 re` gear wheel 24 is fixed to the sleeve 21 to rotate the disc 14 and the shaft 15. Journaled on the shaft 15between the discs 13 and 14 is a roller 25 which forms a stop to limit the movement of the packages 12 toward the center of the drumgwhen they are fed thereto. A gear wheel 26 is secured to the drum 25 and meshes with a series of gears 27 carried on stud shafts 28, Fig. 4, which are journaled in the disc 13. The

-gears 27 have their inner faces shaped to form clampin heads' 29 for holdin the ends of the ac ages 12 while they are eing wrapped. he heads 29 are rotated by gears 30 secured to the outer ends of the stud shafts 28 and driven by a gear 31 secured to the sleeve 18.

The sleeve 18 carries a gear 32 which is rotated by any suitable source of power. lt will be apparent that the rotation of the clamping heads `29 by the gear 32 is independent of the position of the disc 13 and the discs 13 and 14 may be driven bythe gear 24 to carry the packages about the center of the shaft 15 and simultaneously the clamping heads 29 may be rotated by the gear 32 to revolve the packages 12 about their axes as centers. The peripheries of the packages 12 contact with the periphery of the drum 25 on the pitch line of the gears 26 and 27 so that the packages roll upon the drum 25 without any slippage between their surfaces. Coaxial with the clamping heads 29 and carried by the disc 14 is a second se,- ries of clamping heads 33 which are secured by studs 34 journaled in the disc 14 and normally pressed inwardly by springs 35. The outerends of the studs 34 carry discs 36 which engage a cam 37 formed on the outer lateral face of a cam plate 38. The cam 37 is shaped to hold the heads 33 in retracted position, as shown in the upper rotation of the disc 14 and to release the clamp-ing head when it reaches the point in its travel at which the package 12 is fed to the Wrapping drum. This permits the head to move inwardly and clamp the drum between the movable head 33 and the cooperating head 29. The package is then carried forwardly by the rotation ofthe wrapping drum and at the same time rotated upon its axis by the head 29 while the wrapper is wound thereon. `When the wrapper'has been completely wound upon the package, the head 3 3 is again retracted by the cam 37 and the package is released and discharged from the wrapping drum. Thev wrappers for the package are fed into contact therewith from rollers 39 and 40, one side of the wrapper being first coated with an adhesive material from a receptacle 41. The wrappers are pressed against the periphery of the packages by a belt 42 carried and driven by pulleys 43 and arranged to engage the periphery of the packa es.

gThe packages 12 are fed between the clamping heads 29 and 33 by a pivoted carrier 44 mounted on a shaft 45 which is oscillated to move the carrier 44 from the position shown in Fig. 3 to the position shown in Fig. 1 each time a pair ot clamping heads comes into receiving position. The wrapping drum is given a continuous rotation and the packages are fed between the clamping heads while they are in motion. l It will be seen that it is desirable to provide mechanism for accurately positioning the packages between the clamping heads so that when the head 33 is released by the cam 37 the package will be properly centered between the heads, insuring concentric rotation of the package upon its axis. For this purpose a centering bar or stop 46 is provided for each pair of clamping heads, the stops being mounted on shafts 47 journaled between the discs 13 and 14 provided with shoes 48 which engage the cam 49 to rotate the shaft 47 and swing the stop into its centering position when a pair of clamping heads are in position to receive a package 12. Each shaft 47 is provided with an arm 5() having a spring 51 normally tending to rotate the shaft 47 in a direction to hold the stop 46 in a retracted position away from the periphery of the package. Each of the shoes 48 is provided with a tailpiece 52 which engages a limit stop 53, Fig. 5, to limit the movement of the stop plate 46 under the iniiuence of the spring 51. As a pair of clamping heads approaches the receiving position, the stop plate 46 is moved into position to center the package which is fed to the rotating drum by the carrier 44. The package is brought into engagement with the forward edge of the plate 46 and the periphery of the roller 25 so that it is accurately positioned concentrically with the clamping heads. As soon as the heads have gripped the ends ofthe package, the shoe 48 passes olf of the highest point of the cam 49 and thus withdraws the stop plate 46 from contact with the periphery of the package. If the stop plate were permitted to remain in engagement with the package it would interfere with the wrapping of the labels thereon.

I claim 1. In a lwrapping machine, a carrier for receiving packages to be Wrapped, means for feeding packages to said carrier, a stop on said carrier for positioning a package in said carrier, and means for moving said stop out of engagement with said package after it has been positioned in said carrier.

2. In a wrapping machine, a rotary carrier, means for imparting a continuous rotation to said carrier, means for feeding packages to said carrier during said rotation, a stop for positioning packages in said carrier as they are fed thereto, and means for normally holding said stop in retracted position and for moving said stop into active position when said carrier is in position to receive a package.

3. In a wrapping machine, a rotary carrier, means for holding a package in said carrier and for imparting rotation thereto relative to said carrier, means for feeding packages to said holding means, a stop on said carrier for positioning packages relative to said holding means so that they may be engaged thereby, and means for withdrawing said stop from contact with a package after the package has been engaged by said holding means.

4. In a wrapping machine, a rotary carrier, a pair of clamping heads for holding a package in said carrier, means for feeding a package between said heads during rota-- tion of said carrier, a stop for positioning said package relative to said heads when it is fed thereto, and means for retracting said stop away from said package after said package has been gripped by said heads.

5. In a Wrapping machine, a rotary carrier, a pair of clamping heads for gripping a package in said carrier, means for rotating said package relative to said carrier when gripped b v said heads, means for imparting a continuous rotation to said carrier, means for separating said heads to receive a package and for releasing said heads to grip a package, and means for positioning a packagebetween said heads while said heads are held in receiving position, said positioning means being withdrawn from engagement with said package when said heads have been released to grip said package.

6. In a wrapping machine, a movable carrier, a pair of clamping members for holding a package in. said carrier, and a stop on said carrier for positioning a package between said clamping members, said stop being movable into and out of operatin position.

7. In a Wrapping machine, a movable carrier, means for holding a package in said carrier and for moving said package relative to said carrier, means for feeding packages to said holding means, and a device on said carrier movable into and out of operating position for locating a package relative to said holding means when said package is fed to said carrier.

8. In a Wrapping machine, a movable carrier having means thereon for holding a package and rotating the same relative to said carrier, and a pivoted stop on said carrier movable into and out of contact with said package.

9. In a Wrapping machine, a movable carrier, means for supporting a'cylindrical package in said carrier and for rotating said package about its axis, means for feeding a package to said holding means, a stop for positioning said package when fed to said holding means, means for holding said stop in operating position when said holding means are moved by said carrier into position to receive a package, and means for retracting said stop from engagement with said package when said package has been moved by said carrier away from receiving position.

10. In a wrappingmachine, a carrier comprising a pair ot' spaced members, means for feeding a package between said members, means for holding said package in the position to which it is Jfed, and a positioning stop for said package comprising a bar having a plate thereon, the end of said plate being movable into and out of position to engage said package.

l1. In a wrapping machine, a rotary drum, means for holding cylindrical packages in said drum and for revolving said packages upon their own axes, means for feeding packages to said holding means, positioning stops for said packages, and a cam for movin said stops into and out of operating position so that a stop Will be in position to center a package when fed to said drum and will be moved out of contact with said package after said package has been centered.

12. In a Wrapping machine, a drum comprising a pair of spaced discs, a pair of clamping headscarr'ied by said discs in axial alinement with one another, means for feeding,- packages between said clamping heads during rotation of said discs, means for moving said heads relative to one another to clamp a package therebetween, a stop on said drum for center-ng a package between said clamping heads, means for moving said stop into active position when said heads are in receiving position, and means for moving said stop out of engagement with said package when said heads have gripped said package.

13. In a Wrapping machine, a drum comprising a pair of spaced discs, a pair of clamping heads carried by said discs in axial alinement with one another, means for moving` said heads relative to one another to cause them to engage and release packages fed thereto, means for rotating said heads to rotate a package held thereby, a stop comprising a pivoted plate for positioning packages fed to said clamping heads, resilient means for normally holding said plate in inactive position, and a cam for swinging said plate into position to center a package fed to said drum when said heads are moved by said druln to package-receiving position.

14. In a wrapping machine, a drum having a plurality of pairs of clamping heads, the heads of each pair being arranged in coaxial alinement with one another, means for moving the heads toward and away from one another to clamp and release packages therebetween, a central roller for limiting the movement ot' said packages toward the center of said druln, and a stop for each pair of heads arranged to co-act With said roller to position a package for engagement by said heads, said stops being movable into and out of position to engage a package.

15. In a wrapping machine, a drum having a central roller therein, a pair of clamping heads carried by said drum and spaced from the center thereof, means for actuating said heads to cause them to clamp and release packages, a stop arranged to cooperate with said roller to position a package between said clamping heads, means for moving said stop into active position when said clamping heads are moved by said drum into position to receive a package, and means for withdrawing said stop from active position when said package has been clamped by said heads.

In testimony whereof I have signed my name to this specification on this 18th day of October, A. D. 1921.

AXEL R. SCHOLIN. 

